Biblioteca do Café
URI permanente desta seção${dspace.url}/handle/123456789/1
Navegar
4 resultados
Resultados da Pesquisa
Item A design of experiment strategy for quality control of specialty coffee drink based on sensory analysis and statistical tools(Instituto de Tecnologia de Alimentos – ITAL, 2024-12-06) Pinto, Licarion; Lopes Júnior, Hilton; Alves, Enrique Anastácio; Rocha, Rodrigo Barros; Teixeira, Alexsandro Lara; Gois, Jefferson Santos deSensory analysis is crucial for assessing food and beverage quality, but discrepancies may arise in some cases and make the quality evaluation imprecise even with statistical analysis. This issue can be mitigated by sensory analysis based on the coffee drink nuanced characteristics. Therefore, in this study, six Q-Graders, following the Specialty Coffee Association of America's sensory analysis method, evaluated various samples and the data was evaluated statistically. The experiment employed a multilevel categorical design, encompassing six evaluator levels, 44 sample levels, and two types of quality assessment. Grades were assigned to the 44 samples using traditional evaluation (no comments) and guided evaluation (prior sample information). It was possible to identify evaluators whose assessments were unbiased across both guided and traditional evaluations. This work introduced a novel strategy to identify biased evaluators, assess the impact of evaluation types, and perform a more accurate assessment of Coffea canephora Pierre ex-Froehner (coffee) quality and assurance assisted with statistical analysis.Item Fruit and bean traits of the Coffea canephora genotypes most grown in western Amazon(Empresa Brasileira de Pesquisa Agropecuária - Embrapa, 2024-11-25) Lopes Júnior, Hilton; Rocha, Rodrigo Barros; Silva, Adriele Nunes Rodrigues; Moraes, Amanda de Oliveira; Alves, Enrique Anastácio; Espindula, Marcelo Curitiba; Teixeira, Alexsandro LaraThe objective of this work was to quantify the genetic diversity and selection gains regarding the physical traits of the fruits and beans of the 86 Coffea canephora clones most grown in western Amazon. The clones were evaluated as to the effects of genotypes (G), years (Y), and the GxY interaction. Genetic progress was quantified considering combined selection and direct selection for coffee bean weight. Although there was a GxY interaction, based on repeatability estimates the plants presented a similar performance over time. A positive correlation was observed between fruit and bean weight, except for some genotypes, such as R22, AS5, and 'BRS 3210', which presented larger beans and smaller fruit, and as BG180, P42, LB60, G20, and N12, with larger fruit and smaller beans. Using selection for the main trait, the estimates of genetic progress were similar to those obtained through different selection indexes, through which 14 genotypes with a higher bean weight were selected. The evaluated C. canephora clones exhibit high genetic diversity for the selection of plants with higher grain mass.Item Levantamento e mapeamento do uso e cobertura da terra com ênfase nas áreas cafeeiras da região das Matas de Rondônia(Embrapa Territorial, 2024-04) Ronquim, Carlos Cesar; Rocha, Nívia Cristina Vieira; Alves, Enrique AnastácioO uso combinado de geotecnologias e dados do Cadastro Ambiental Rural (CAR) para estudar a região das Matas de Rondônia possibilitou entender as relações das áreas agropecuárias entre si e destas com a vegetação florestal nativa, traçar um panorama da produção cafeeira local e de sua relação com o desmatamento ou a degradação florestal, e fornecer informações valiosas para a discussão e a compreensão das mudanças de uso e cobertura da terra. A região das Matas de Rondônia conta com a primeira indicação geográfica (IG) do tipo denominação de origem (DO) para café canéfora (conilon e robusta) no mundo. É o centro de origem dos cafés robusta amazônicos, produto da hibridação entre as variedades botânicas, conilon e robusta. Os resultados apresentados nesta publicação podem amparar decisões na execução de políticas públicas para o estado de Rondônia e contribuir para ampliar a confiabilidade em investimentos, comercialização e consumo dos cafés produzidos nessa região.Item Unraveling the genetic diversity of coffee processing traits in Coffea canephora(Universidade Federal de Santa Maria, 2024-08-26) Silva, Adriele Nunes Rodrigues; Rocha, Rodrigo Barros; Moraes, Amanda de Oliveira; Espindula, Marcelo Curitiba; Teixeira, Alexsandro Lara; Alves, Enrique AnastácioWith advancements in coffee cultivation, several traits may be considered in selection of plants, which must exhibit a set of favorable characteristics. The outturn index, defined as the relationship between the mass of mature fruit and processed beans, emerges as a key factor influencing productivity. This study characterized the outturn over two harvests of 57 clones marketed in the public domain and 10 registered cultivars. The analysis considers the effects of genotypes, measurements, and genetic progress achieved through plant selection. According to the maturation cycle of each clone, washed samples of cherry coffee were collected considering a completely randomized factorial design for characterization of the effects of genotypes, years, and the genotype × years (GY) interaction. The drying, peeling, and the outturn index were individually assessed. Despite the significant effects of the GY interaction, genotypes demonstrated minimal alterations in their ranking across measurements. Clones with higher outturn, including LB30, BRS1216, LB12, N7, LB10, LB20, BRS3220, and AS5, exhibited an average outturn of 25.51%, reflecting a gain of 12.17%. Conversely, clones with lower outturn, such as BG180, GJ30, GJ20, AS7, AS10, P42, N1, and P60, had an average of 19.15%, indicating a reduction of 14.02% compared to the general mean. Analyzing the distribution of the outturn values, 19.4%, 62.7%, and 17.9% of genotypes were classified as high, medium, and low outturn, respectively, providing valuable insights for optimal cultivation strategies.